Lucent Technologies 6.1 manual Touch-Tone Receivers TTRs

MERLIN LEGENDCommunications System Release 6.1	Issue 1
System Planning 555-661-112	August 1998

2Control Unit Configuration

Numbering the System Page 2-16

Planning Form Instructions

Refer to the completed Control Unit Diagram (Form 1) and Table 2–1 above to mark the extension jack types on Form 2a:

1.For each extension module noted in the Control Unit Diagram (beginning with Slot 01), write in the type of module in the Mod. Type column of Form 2a and, after the appropriate logical ID (Log. ID) number, draw a line to indicate the end of that module.

For example, if the first module in the control unit is an 008 MLX module that has eight jacks, write 008 MLX in the Mod. Type column and draw a line after Logical ID 8.

NOTE:

If your list includes an 008 OPT module, draw a line after the twelfth logical ID, but cross off the last four logical IDs, since these jacks cannot be used to physically connect telephone equipment. The extension numbers of these logical IDs can be used, however, for applications requiring phantom extensions.

2.In the Jack Type column of Form 2a, do one of the following to indicate the type of each extension jack next to its logical ID:

■If the jack is analog, check A.

■If the jack is digital, check D.

■If the jack is basic telephone, check B.

You are now ready to match the system telephones and other equipment to these available jacks. After calculating touch-tone receivers as described in the next section, begin matching equipment and jacks with Jack for Primary Operator Position, and proceed through the subsequent sections as appropriate for the system.

Touch-Tone Receivers (TTRs) 2

Use these guidelines for calculating the system requirements for touch-tone receivers for systems both with and without a voice messaging system (VMS).

The number of TTRs needed in a MERLIN LEGEND system should be calculated before the system is installed so that you can order the modules required to supply the TTRs. However, as the volume of calls increases and more applications are added to the system, TTRs may also need to be added. A system that exhibits one or more of the following symptoms may need more TTRs:

■Single-line telephone users do not get dial tone when they lift the handset to dial out.

■The voice messaging system fails to transfer calls.

■Calls fail to ring or go to coverage prematurely.

■Reorder tone on UDP/ARS calls using tandem tie trunks.

■Delay in MWL tie trunks when tie trunks are available.